/// <summary>
/// 转发常规数据包
/// </summary>
/// <param name="packetInfo"></param>
/// <returns></returns>
public static void TranNormalPacket(PacketInfo packetInfo)
{
byte[] packetByte = packetInfo.GetPacketByte();
PacketEntity packetEntity = (PacketEntity)Util.BytesToObject(packetByte);
string srcIP = packetEntity.GetHead().strSrcIP;
string desIP = packetEntity.GetHead().strDesIP;
Const.EN_RET_CODE retVal = Const.EN_RET_CODE.EN_RET_INIT;
int tranPort = Const.INVALID_NUM;
//流表中存在转发选项，直接转发
if (FlowTable.GetInstance().TryGetItem(desIP, out tranPort))
{
retVal = Transmitter.SendViaPhyPort(tranPort, packetByte);
if (Const.EN_RET_CODE.EN_RET_SUCC != retVal)
{
Util.Log(Util.EN_LOG_LEVEL.EN_LOG_INFO, "数据包转发失败");
}
}
//流表中不存在转发选项，将数据包暂存缓冲区，上报控制器
else
{
Program.BufferQueue.Enqueue(packetInfo);
PacketHead head = new PacketHead(srcIP, desIP, PacketHead.EN_PACKET_TYPE.EN_PACKET_IN);
PacketEntity packetIn = new PacketEntity(head, "");
retVal = Transmitter.SendViaPhyPort(0, Util.ObjectToBytes(packetIn));
if (retVal != Const.EN_RET_CODE.EN_RET_SUCC)
{
Util.Log(Util.EN_LOG_LEVEL.EN_LOG_INFO, "packet_in发送失败");
}
}
}
/// <summary>
/// 获取单例
/// </summary>
/// <returns></returns>
public static FlowTable GetInstance()
{
if (null == instance)
{
lock (objLock)
{
if (null == instance)
{
instance = new FlowTable();
}
}
}
return(instance);
}
/// <summary>
/// 处理控制器下发的Pakcet_Out消息，监听子线程调用
/// </summary>
/// <param name="packetInfo"></param>
public static void DealPacketOut(PacketInfo packetInfo)
{
Console.WriteLine("packet_out");
byte[] buffer = packetInfo.GetPacketByte();
PacketEntity packet = (PacketEntity)Util.BytesToObject(buffer);
byte[] FlowBuffer = packet.GetByteContent();
Dictionary <string, int> dictionary = (Dictionary <string, int>)Util.BytesToObject(FlowBuffer);
for (int i = 0; i < dictionary.Count; i++)
{
//Console.WriteLine(dictionary.ElementAt(i).Key + " " + dictionary.ElementAt(i).Value);
FlowTableItem fItem = new FlowTableItem(dictionary.ElementAt(i).Key, dictionary.ElementAt(i).Value);
FlowTable.GetInstance().AddItem(fItem);
}
FlowTable.PrintItems();
}